An artist's cute bronze subway sculptures belie his violent artistic past.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

Ride the subways of yesteryear.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

An office built to look like a giant basket.

Prehistoric animals decorate this popular outdoor park.

Moonbows over Kentucky.

Every equinox this Maya pyramid puts on a spooky ancient light show.

A Beaux-Arts triumph set to become Ford's innovation campus

"Girl in a Wetsuit" is what happens when a sculptor has to find a way around a 100 year old copyright.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

Traditional 15th century Chinese garden in the middle of Vancouver.

A patch of Philippines forest devoted to saving the lives of an emotionally sensitive species of googly-eyed primates.

Bohol's mysterious brown hills.

The bears of Bern have been a city highlight for over 500 years.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

A hugely vast Irish landscape of barren rock that stretches for miles.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

The first piece of public art dedicated to LGBT rights.

The secret city built by the Manhattan Project.